Zig binding for libwebp, libwebp used is a fork with added Zig build system. It is added as a dependency and will be downloaded and built from source.
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Add zig-webp as a dependency in your build.zig.zon as follows:
.{ .name = "your-project", .version = "1.0.0", .paths = .{ "src/", "build.zig", "build.zig.zon", }, .dependencies = .{ + .zig_webp = .{ + .url = "https://github.com/koenigskraut/zig-webp/archive/1358da0b9f486e5ea04c149fed4f57f70a395363.tar.gz", + .hash = "122072edc915633a032c53bacd9b1035d44649242b323d97a7d93dd540c607a2d7d3", + }, }, }
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In your build.zig add zig-webp as a dependency and attach its modules to your project:
const std = @import("std"); pub fn build(b: *std.Build) void { const target = b.standardTargetOptions(.{}); const optimize = b.standardOptimizeOption(.{}); + const opts = .{ .target = target, .optimize = optimize }; + const dep = b.dependency("zig_webp", opts); + + const webp_module = dep.module("zig-webp"); + const webp_lib = dep.artifact("webp"); const exe = b.addExecutable(.{ .name = "test", .root_source_file = .{ .path = "src/main.zig" }, .target = target, .optimize = optimize, }); + exe.addModule("webp", webp_module); + exe.linkLibrary(webp_lib); exe.install(); ... }
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Import and use it in your project! Note that currently zig-webp keeps the structure of original header files like
webp/encode.h
andwebp/decode.h
:const std = @import("std"); const webp = struct { const decode = @import("webp").decode; const encode = @import("webp").encode; }; pub fn main() !void { var arena = std.heap.ArenaAllocator.init(std.heap.page_allocator); defer arena.deinit(); const alloc = arena.allocator(); var in_file = try std.fs.openFileAbsolute("path_to_file.webp", .{}); defer in_file.close(); var data = try in_file.readToEndAlloc(alloc, 1<<24); const rgb = try webp.decode.decodeRGB(data); defer rgb.deinit(); var out_file = try std.fs.cwd().createFile("out.ppm", .{}); defer out_file.close(); const writer = out_file.writer(); try writer.print("P6\n{} {}\n255\n", .{ rgb.width, rgb.height }); for (0..rgb.height) |h| { try writer.writeAll(rgb.data[rgb.width * 3 * h ..][0 .. rgb.width * 3]); } }